baber/WOPTO huggingface dataset:
Patent GB-506105-A (GB)
Title: Improvements in or relating to means for automatically controlling the speed of a prime mover
IPC: G05D13/00
Filed: 1938-06-13
Abstract: 506,105. Fluid - pressure servomotor - control systems. SOC. RATEAU. June 13, 1938, No. 17545. Convention date, Aug. 13, 1937. [Class 135] In a device for controlling the speed of a prime mover such as a turbine, direct current electric motor, &c. 1, of the kind comprising a volumetric oil pump 3 which is driven by the turbine at the same, or a proportional, speed and circulates oil from a tank 4 through inlet and delivery pipes 5, 6 and a return pipe 11, the steam supply pipe 12 to the turbine being provided with a throttle valve 13 which is controlled by a regulator 14 subject to the pressure in the pump delivery pipe 6 through a pipe 15, the pump delivery pressure is varied by a valve 10 in response to varations of a' parameter wholly independent of the working conditions of said turbine. In the form shown, Fig. 1, the valve 10 is coupled to a spring- pressed piston 16 the position of which is -controlled by the pressure in a pipe 17 ; it may however be controlled by other physical quantities, e.g., the temperature of a fluid, the level of a liquid in a reservoir, or the delivery of a pipe, &c. Fig. 2 shows a modification in which the speed of the turbine is regulated in accordance with the rotational speed of another rotary machine 27. The machine 27 drives a pump 28 the return circuit of which consists of pipes 29, 31 and an intermediate valve 30. The valve 30 is mounted on the same spindle 32 as the valve 10, and both valves are jointly controlled by a spring-pressed piston 33 subjected, through a pipe 34, to the pressure in the delivery pipe 29 of said pump 28.
Patent GB-593953-A (GB)
Title: Improvements in or relating to the production of riboflavin in an aqueous medium
IPC: A61K31/525
Filed: 1943-10-25
Abstract: Riboflavin - producing mycetes, especially Eremothecium Ashbyii, when grown at 22-34 DEG  C. in a medium containing carbohydrates not exceeding 5 per cent, and proteins or their non-toxic degradation-products together with a minor quantity of wheat germ, the liquor being subjected to vigorous agitation in a continuous current of sterile humidified air during the fermentation, afford increased yields of the vitamin. Advantageously, glucose, sucrose including brown sugar, malt syrup molasses including black strap molasses, and hydrolysed starch or a starch-containing material may be used as carbohydrates, while peptones, crude or refined, are suitable proteins.  Stock cultures of E. Ashbyii are carried on a molasses-peptone agar medium adjusted to pH 6.0, incubated at 28 DEG C. and transferred every week to a fresh medium, from which inocula for large-volume fermentations are prepared by incubating at 28 DEG C. for about 3 days, a portion of the stock culture on fresh molasses-peptone "slants."  In examples: (1) brown sugar, neopeptone, wheat germ, beef extract, monobasic potassium dihydrogenphosphate, sodium chloride and distilled water medium at pH 6.0 is sterilized and a current of air is led into the cooled fermenter, prior to inoculation with "starter" culture; (2) a fermentation conducted exactly as in (1), substituting a medium comprising cane molasses syrup, neopeptone, peptone, tryptone, beef extract, potassium dihydrogen phosphate, sodium chloride and distilled water, at pH 6.0 and using sterile cane molasses solution as carbohydrate.
Patent GB-1104057-A (GB)
Title: Improvements relating to power operated sliding door gear
Inventor: STRETTON HENRY JACKSON
IPC: E05F15/14
Filed: 1966-04-21
Abstract: 1,104,057. Power - operated sliding door mechanism. G. D. PETERS & CO. (ENGINEERING) Ltd. 7 Feb., 1967 [21 April, 1966], No. 17554/66. Heading E2M. Power-operated sliding door gear is characterised by having a driving mechanism for transmitting a driving force to at least one door leaf, which mechanism includes a poweroperated coupling device arranged and adapted to transmit the driving force only when dooroperating power is present. Preferably, the coupling device includes driving and driven parts and is arranged and adapted to disconnect the parts from each other when the resistance to movement of the driven part exceeds a pre-determined amount or when dooroperating power is absent. The driving and driven parts are preferably arranged and adapted to re-engage automatically on operation of the door gear after restoration of power or reduction of said resistance. A preferred embodiment of the invention comprises an electric motor 2 driving lead screw 3 on which is a nut 4 prevented from rotating by guide 5. Nut 4 forms the driving part of the coupling device and is connected, in operation, to door leaf 8 by a device indicated generally at 7 in Fig. 1. The device 7 comprises two opposed pawls 17, 18 pivoted on a bracket 29 which also carries coils 21, 22 (see Figs. 2, 7); a hanging trigger 6 pivoted on nut 4; and a double-acting spring-loaded plunger unit 15 mounted on nut 4 and serving to hold trigger 6 in a vertical position. The natural tendency of pawls 17, 18 is to adopt a first position as shown by broken lines 17', 18' under the action of their own weight, clear of trigger 6. Coils 21, 22 are conected to the motor power supply and, when energised, hold the pawls up in the second position, shown in full lines. When nut 4 is moved by screw 3, trigger 6 engages one or the other pawl to move leaf 8 and leaf 13, pivoting of trigger 6 being preventd by unit 15. If the power fails, the pawls drop to rest against non-magnetic pins 19, 20. The door leaves are then disconnected from nut 4 and can be moved by hand. When an obstruction prevents movement of the door leaves, the trigger 6 will tend to be deflectd out of the vertical position and will apply a load to unit 15, and if this load is sufficient to overcome the pre-determined compressive force of the spring contained within the unit, then the trigger 6 will be deflected until it disengages from the pawls.
Patent GB-978157-A (GB)
Title: Silicone rubber-forming compositions
Filed: 1961-05-15
Abstract: A silicone rubber-forming composition comprises, by weight, 100 pts. a siloxane having a viscosity of at least 50,000 cs. at 25 DEG C. and an average general formula <FORM:0978157/C3/1> in which each R is a monovalent hydrocarbon (saturated or unsaturated) or halo-hydrocarbon radical and n has an average value of from 1.99 to 2.01, and 0.1 to 10 parts of a complex compound of boric acid with a polyhydric alcohol. The siloxanes used may contain terminal Si-bonded -OH1-OR1 or R radicals or H or halogen atoms.  The complex is made by reacting boric acid with a polyhydric alcohol; if desired, a saturated solution of boric acid in the alcohol can be used.  The compositions may also contain known inorganic or organic fillers and additives and can be cured in known manner by high energy radiation, heating with organic peroxides or by room temperature vulcanisation techniques. In a typical example (1) a paste of boric acid, glycerine and fume silica, was milled with a liquid methylvinylsiloxane copolymer, fume silica and benzoyl peroxide to yield a composition which was extruded to form a tape and was then vulcanised at 200 DEG C. Specifications 782,857 and 841,825 are referred to.
Patent GB-687910-A (GB)
Title: Improvements in electrically insulating pipe unions
IPC: F16L25/02
Filed: 1951-07-25
Abstract: 687,910. Pipe couplings. ECOFF, R. W. July 25, 1951 [Aug. 3, 1950], No. 17682/51. Class 99 (i). Coupling parts 10, 12 joined to pipes 11, 13, e.g. by screw-threads or solder. are connected by a screwed ring 14 provided with a flange 14c which is electrically-insulated from the shoulder 12c and the neck 12a of the part 12 by the legs 16b, 16a of an L-section gasket 16, e.g. of hard red fibre, the shoulder being electrically-insulated from the part 10 by an annular gasket 15, e.g. of neoprene. There may be a recess 17 in the flange to accommodate the leg 16b a recess 14d of the ring to provide an air gap between the shoulder and the ring and a space into which the material of the gasket 15 may flow when compressed, and a rib 10d of the part 10 so that the gasket is pinched between the rib and a conical surface 12d of the part 12. In modifications, (a) the parts are adapted to connect pipes of different diameters, (b) the part 12 has a conical rib engaging the inner periphery of the gasket 15 and (c) a tube having a frustro-conical adapter engaging the conical surface 12d passes through the part 10.
Patent GB-530645-A (GB)
Title: Improvements in reversible two-stroke internal combustion engines
IPC: F02B33/00
Filed: 1939-06-16
Abstract: 530,645. Reversing. AKTIEBOLAGET ATLAS-DIESEL. June 16, 1939, No. 17684. Convention date, Nov. 29, 1938. [Classes 7 (ii) and 7 (v)] [Also in Group XXVI] In a reversible two-stroke engine, the scavenging pump comprises two engine-driven centrifugal compressors, one arranged to be active when the engine runs in one direction and the second when the engine runs in the opposite direction. In one form, Fig. 1, separate pump housings 5, 6 comprise air intakes 12, 13 and outlets 14, 15, Fig. 3, leading through a pressure conduit 16 to the scavenging- air receiver of the engine. The pump rotors 9, 10 are secured to a common shaft 11 driven from the engine through gearing 19 ... 22, the vanes of the rotors 9, 10 being arranged in opposite directions, so that one or other pump is active according to the direction of rotation. A flap valve 18, Fig. 3, at the junction of the conduits 14, 15 with the conduit 16, is moved by the current from one or other pump to shut off the conduit leading from the other. In a modification, the pumps are provided with a common air intake located between them, and the driving gearing is located between the pump unit and the engine.
Patent GB-261811-A (GB)
Title: Improvements in or relating to feeding devices for wood-working machines
IPC: B27B25/02
Filed: 1926-04-12
Abstract: 261,811. Sagar & Co., Ltd., J., Sagar, H. G., and Groom, T. R. April 12, 1926. Feed-motions.-In planing, moulding, or other wood-working machines, the work is fed by an endless chain e of roughened plates, the upper run carried on bars z, whilst the work is pressed down by rollers o, p, the last mentioned being driven from the endless chain drive w. The roller are adjustable vertically by screws m<1>, n<1>, with or without springs and the housing in which they are mounted is pivoted to a bracket j and can be tilted by means of a screw x to accommodate non-rectangular work. The bracket j can be slid across the bed by means of rock and pinion gear y. To allow these adjustments of the roller p, the drive to the same is through a telescopic shaft s<1> jointed at p<2>, s<2>. The endless chain may be arranged to extend under a feed hopper.
Patent GB-228787-A (GB)
Title: Improvements in and relating to combination electric ignition switches
IPC: H01H27/10
Filed: 1924-07-25
Abstract: 228,787. Rychlewski, J. S. July 25, 1924. Secret contact-combination switches, of the kind in which a plurality of members carrying contacts are rotated to form a combination of markings so that the contacts will engage the other contacts, are provided with a support with a circular recess containing two series of depressions, in one depression of each of which series is a contact, a ring rotatable in the recess and carrying a contact adapted to engage one of the contacts in the depressions, a disc rotatable, in the ring and having a contact engaging the other contact in the depression and the contact on the ring, and indicating means for determining the extent of rotation. The base A is recessed at 10 and provided with two series 12, 13 of depressions, one of which in each series has a contact 14, 15 connected in the ignition circuit. A ring 17 carries a contact arm 18 adapted to engage the contact 15 and also a contact arm 30 on a disc 25 rotatably mounted within the ring 17. The arm 30 is also adapted to engage the contact 14 so that when the arms 18, 30 are in alignment and engage contacts 14. 15 the circuit is closed. A spring 28 surrounds the stem 27 of the disc 25 and holds the parts in place, and springs 36 engage the arms 18, 30 to force them into the depressions. Either or both members 17, 25 may be rotated to break circuit and to give an indication to the operator, the base A and ring 17 carry index numbers corresponding with the depression in series 13 and the disc 25 carries numbers corresponding with those of series 12. The numbers on the ring 17 and disc 25 are marked on a ring 23 and disc 33 which are both removably secured into holes on the ring 17 and disc 25 respectively so the combination may be changed by the operator. In a modification an additional ring with an index is provided for increasing the number of combinations. It carries an arm which bridges the arms 18, 30 in the closed position of the switch.
Patent GB-959167-A (GB)
Title: Process for the preparation of pure bismuth
IPC: C22B30/06
Filed: 1963-05-07
Abstract: A process for the preparation of pure bismuth comprises reducing BiOCl with pure hydrogen at a temperature of from 800 DEG  to 950 DEG C. The process is according to the equation 3BiOCl+ 3H2 --> 2Bi+3H2O+BiCl3 and the BiCl3 sublimes immediately and condenses in the cooler parts of the apparatus, the subliming BiCl3 carrying along metallic impurities as chlorides or other complex compounds to leave the Bi in a very pure form.  The preparation of the BiOCl is carried out by chlorination of crude BiCl according to the equation 2Bi+3Cl2 --> 2BiCl3 with subsequent hydrolysis of the BiCl3 according to the equation BiCl3+H2O --> BiOCl+2HCl.  Impurities are removed by the chlorination and the purification may be carried out by sublimation or zone refining; a refining action can be obtained by carrying out the hydrolysis of the BiCl3 as a fractional hydrolysis. In an example, chlorination of Bi was carried out in a quartz tube having a gas inlet at one end and a collecting flask at the other, the central part of the tube being enclosed in a furnace.  A boat containing Bi was placed in the heated part of the tube which was filled with pure nitrogen and heated to about 500 DEG  C. A mixture of N and Cl was then passed through the tube and the temperature was raised to between 700 DEG  and 800 DEG  C.  The Bi and Cl reacted to form BiCl, which sublimated and was carried by the nitrogen to the collecting flask.  The apparatus was allowed to cool with a nitrogen atmosphere in the tube.  The Bi was chlorinated with a yield of from 94% to 98%. Hydrolysis of the BiCl was effected by mixing it with distilled water and then decanting the water.  The BiCl precipitate was filtered off and dried at 130 DEG  C., the yield being about 97.5%.  Reduction of the BiOCl was carried out in a similar apparatus, the BiOCl being placed in the tube which was heated to about 900 DEG  C. and a stream of pure hydrogen being passed through the tube.  The yield of Bi was about 70%.  The BiCl3 formed can be converted by hydrolysis into BiOCl for further reduction thus increasing the yield of Bi to over 90%.  The Bi produced is in the form of approximately spherical particles.ALSO:A process for the preparation of pure bismuth comprises reducing BiOCl with pure hydrogen at a temperature of from 800-950  DEG C. The process is according to the equation 3 BiOCl+3 H2-->2 Bi+3 H2O+BiCl3 and the BiCl3 sublimes immediately and condenses in the cooler parts of the apparatus, the subliming BiCl3 carrying along metallic impurities as chlorides or other complex compounds to leave the Bi in a very pure form.  The preparation of the BiOCl is carried out by chlorination of crude BiCl (see Division C1). Reduction of the BiOCl was carried out in a tube which was heated to about 900  DEG C., a stream of pure hydrogen being passed through the tube.  The yield of Bi was about 70%.  The BiCl3 formed can be converted to hydrolysis into BiOCl for further reduction thus increasing the yield of Bi to over 90%.  The Bi produced is in the form of approximately spherical particles.
Patent GB-926312-A (GB)
Title: Improvements in alloys
IPC: C22C18/04
Filed: 1958-06-05
Abstract: An alloy has the following composition:-  .Al.30-60% .Zn.30-60% .Si.0.1-4% .Fe.0.01-1% .Cu.2-4.5% .Be.0.01-2%  According to the Provisional Specification the alloy is particularly suitable for casting.
Patent GB-695465-A (GB)
Title: Improvements in or relating to control mechanism for the power transmission systems of motor vehicles
Inventor: SIMPSON JOHN KEITH
Filed: 1950-07-19
Abstract: 695,465. Centrifugal switches. AUTOMOTIVE PRODUCTS CO., Ltd. Oct. 19, 1951 [July 19, 1950], No. 18058/50. Class 38 (v) [Also in Groups XXIV and XXIX] A centrifugal switch, for making a circuit to provide automatic declutching on a vehicle at low engine speeds, comprises a rotating housing 124 mounted on the engine fan-pulley, and carrying a pivoted mass 135 pressed inwardly by a spring 134, in opposition to centrifugal force, to close contacts 133 in opposition to a blade-spring 132. Specification 699,083, [Group XXIV], is referred to.
Patent GB-1409999-A (GB)
Title: Crushing roller mill
IPC: B02C15/00
Filed: 1974-04-25
Abstract: 1409999 Roller-and-ring mills DEUTSCHE BABCOCK & WILCOX AG 25 April 1974 [3 May 1973] 18060/74 Heading B2A [Also in Division F2] A roller for a roller-and-ring mill comprises a rotatable hub 2 with an annular U-cross -section roller member or tyre 1 secured on the hub against axial movement by a securing ring 13. The hub has a cylindrical seating surface 11 for the tyre and a collar 12 projecting beyond the seating surface to abut against the tyre. Radial recesses 14 are provided in the tyre on the end faces. Keys 15 engage respective recesses in one end face of the tyre to restrain it against rotational displacement. When the tyre is worn as at 8 on one side it can be reversed. Each key may comprise a rectangular prism engaging a respective groove 17 in the hub and secured by a countersunk bolt or screw 16. Alternatively the keys may be integral with the hub. The hub is freely rotatable on an axle 4 by roller bearings 3, and the roller cooperates, in known manner with the ring-shaped face 5 of a grinding plate 6.
Patent GB-1160633-A (GB)
Title: Roller Conveyors
Inventor: RICHARDSON COLIN NEVILLE FREDE
IPC: B65G39/00
Filed: 1967-04-20
Abstract: 1,160,633. Roller conveyers. CONVEYOR UNITS Ltd. 22 July, 1968 [20 April, 1967], No. 18172/67. Heading B8A. The end of a conveyer roller 20 is supported by a stub axle 26 which is passed through the sides 12 of a longitudinal framework member 11 and secured to an inner bearing member 23 by a spring fastening 16. In place of the fastening, cotter-pins or wires may be passed through holes in the stub axle. The framework member may be of inverted channel shape.
Patent GB-384925-A (GB)
Title: Improvements in or relating to brakes for motor and other vehicles
IPC: F16D51/12
Filed: 1932-06-27
Abstract: 384,925. Internal-expanding brakes. CONDOR MANUFACTURE SUISSE DE CYCLES ET MOTOCYCLES, Courfaivre, Switzerland. June 27, 1932, No. 18177. Convention date, June 15. [Class 103 (i).] Drum brake comprises two or more flexible shoes having a radius less than that of the interior of the drum and controlled simultaneously by members moving them tangentially in such a manner that the middle part of the surface of each shoe first touches the drum, the contact afterwards extending to the two ends of each shoe. The shoes 2, 21 are mounted by means of recesses 6, 6<1> on studs 5, 5<1> on the backplate 4 and are controlled by cams 9, 9<1>, interconnected by levers 12, 12<1> and a link 11 and operated by a lever 7 on the shaft 8 of the cam 9.
Patent GB-650780-A (GB)
Title: Broaching machines
IPC: B23D37/06
Filed: 1947-07-09
Abstract: 650,780. Broaching. SKINNER, V. A., and WEATHERLEY OILGEAR, Ltd. July 9, 1947, No. 18205. [Class 83 (iii)] In a broaching machine, a sliding table 6 transfers work-pieces 14 to and from a cradle 13 integral with or rigidly attached to the machine frame and the work-pieces are rigidly held in the cradle by hydraulically-operated clamps 15, 16. The table is reciprocated by link gear connected to a hydraulic ram pivoted on the frame and its upper surface may be shaped to receive the work-piece or may carry an adjustable jig 12. In the cradle, the workpieces are preferably held against a solid abutment so that the broaching force is transferred into the frame through a bracket 17. The operation of the clamps and sliding table may be automatically controlled by an electrohydraulic system interlinked with the movement of the tool-holder. Specification 637,931 is referred to.
Patent GB-877680-A (GB)
Title: Improvements relating to clocks
Inventor: SILBERMANN VIKTOR
IPC: G04B45/00
Filed: 1959-05-28
Abstract: 877,680. Clocks. SILBERMANN, V. May 28, 1959, No. 18231/59. Class 139. In a clock the hands 7, 8, 9 move over a face 2 in the form of a photograph, a postcard, a painting, a drawing, a calendar or a mirror which is located between the front and rear casing parts 3 and 1 mounted in a support member 15. The face has a central hole whereby it is fitted in place over the aligned hands.
Patent GB-293001-A (GB)
Title: Process for the manufacture of hydrogenation products
IPC: C07C37/055
Filed: 1928-06-23
Abstract: 293,001. Schering-Kahlbaum Akt.- Ges. June 29, 1927, [Convention date]. Addition to 276,010 and 280,956. Phenols; hydrocarbons. - Phenols and their hydrogenation products are obtained by catalytic treatment with hydrogen of coumaranes or of the condensation product of a-naphthol with acetone. The temperature should be substantially higher than the usual hydrogenation temperatures, i.e. exceeding 200‹ C., in order that the compounds may be split at the ether linkages, whilst the pressure must exceed the vapour tension of the products. According to the examples, (1) 3: 6- dimethylcoumarane is hydrogenated at a temperature of 235-250‹ C. in the presence of the mixed carbonates of nickel, cobalt and copper; the product consists of thymol or its isomers, or menthol or its isomers, according to the duration of the treatment; (2) the condensation product of a-naphthol and acetone is hydrogenated in the presence of a, nickel-containing catalyst at 280- 320‹ C.; a mixture of 4-isopropyl-1 -naphthol, anaphthol, isopropylnaphthalene and naphthalene, or their hydrogenation products, is produced. Specification 273,684 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes generally the hydrogenation of etheric compounds other than those described in the parent Specification. This subject-matter does not appear in the Specification as accepted.
Patent GB-596057-A (GB)
Title: Improvements relating to unions for pipes, tubes and rods
IPC: F16L37/10
Filed: 1945-07-17
Abstract: 596,057. Pipe or rod joints. LAMONT, A. July 17, 1945, No. 18255. [Class 99 (i)] [Also in Group XXXVI] A pipe or rod 2 is secured in a socket 3 by rotating a bush 5 located in an eccentric counterbore 4a of the socket, and having an internal, preferably serrated, rib 5b which engages the pipe. In another form the locking ring 5, Fig. 3, is rotatable on an eccentric, external shoulder 3a of the socket, and has a tongue 5d extending through a slot 3b of the socket to engage the pipe. In this form the socket may be made from a sheet metal blank, a projecting portion being turned back to form the eccentric shoulder, and the blank is slotted before bending it to socket form.,
Patent GB-259683-A (GB)
Title: Improvements in couplings for vehicles
IPC: B61G1/36
Filed: 1925-07-17
Abstract: 259,683. Harries, D. H., and Llewellyn, S. July 17, 1925. Couplings, non-automatic. - A coupling for vehicles consists of two connected members each comprising an L-shaped piece a, with an extension shaped to form a D-piece f, and a rotatable L-shaped piece b which is pivoted on the horizontal arm d of the piece a and has a horizontal arm g adapted to close the mouth of the coupling member after the piece a has been inserted through the draw-bar l of the vehicle. The pieces b may be locked by forks j pivoted on the D-pieces f, which are connected by a link k.